The seed of which of the following were used for weighing by jewelers

Options

A. Cajanus cajan
B. Lens culinaris
C. Glycine max
D. Abrus precatorius

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which seed was historically used by jewelers for weighing purposes.

2. **Analyzing the Options**: We have four options to consider:
- Option 1: Cajunus Cajun
- Option 2: Lens Galanides
- Option 3: Glycine Max
- Option 4: Abras Precatorius

3. **Identifying Characteristics of the Seeds**: Jewelers typically require seeds that are small, have a consistent weight, and are visually appealing.

4. **Evaluating Each Option**:
- **Cajunus Cajun**: This seed is not known for its use in weighing.
- **Lens Galanides**: This seed also does not have a historical connection to weighing in jewelry.
- **Glycine Max**: This is the soybean, which is not suitable for weighing purposes in jewelry.
- **Abras Precatorius**: The seeds of this plant are known for their bright appearance and consistent weight, making them suitable for use by jewelers.

5. **Conclusion**: Based on the characteristics and historical use, the correct answer is **Option 4: Abras Precatorius**.

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